This was never true, and you could have easily checked before posting this. People who are really concerned about misinformation seem to spread it around casually about their enemies.
>Elon Musk has deemed the words “cis” and “cisgender” slurs on Twitter and warned that anyone who harasses others on Twitter will receive at least temporary suspension.
https://www.forbes.com/sites/kimelsesser/2023/07/02/elon-mus...
https://www.fastcompany.com/91126082/elon-musk-x-cisgender-c...
https://www.independent.co.uk/tech/x-cisgender-slur-cis-elon...
That is quite different from claiming that if you say “cisgender” you get banned…
Just clarifying the truth of the matter is between what the two posters above me said.
Twitter is not a bastion if free speech. It's a Nazi bar where a certain type ideologically violent free speech is encouraged.